.blog-header {
    line-height: 2;

}
.blog-header-logo {
    font-family: "Playfair Display", Georgia, "Times New Roman", serif/*rtl:Amiri, Georgia, "Times New Roman", serif*/;
    font-size: 3rem;
}
.blog-header-logo:hover{
    color: cornflowerblue;
}
a{
    text-decoration: none;
}
h1, h2, h3, h4, h5, h6 {
    font-family: "Playfair Display", Georgia, "Times New Roman", serif/*rtl:Amiri, Georgia, "Times New Roman", serif*/;
    font-size: 22px;
}

.display-4 {
    font-size: 2.5rem;
}
@media (min-width: 768px) {
    .display-4 {
        font-size: 3rem;
    }
}

.nav-scroller {
    position: relative;
    z-index: 2;
    height: 2.75rem;
    overflow-y: hidden;
    border-bottom: 1px solid #e5e5e5;
    border-top: 1px solid #e5e5e5;
}

.nav-scroller .nav {
    display: flex;
    flex-wrap: nowrap;
    padding-bottom: 1rem;
    margin-top: -1px;
    overflow-x: auto;
    text-align: center;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
}

.nav-scroller .nav-link {
    padding-top: .75rem;
    padding-bottom: .75rem;
}
.link-secondary{
    width: 200px;
    display: block;

}
.link-secondary:hover{
    border-radius: 20px;
    background: dimgrey;
    color: aliceblue;
}
.btn-outline-secondary {
    width: 80px;
    background: dodgerblue;
    color: aliceblue;
    border-radius: 20px;
}

*{
    font-weight: bolder;
}
body{
    background-size: 2000px 834px;
    background-image: url("../backgroud/a.png");
    /*background-repeat: no-repeat;*/
    filter: alpha(opacity=50);
}

.a1{
    color:black;
    font-weight: bold;
}
.a2{
    width: 100px;
    margin: 0 auto;
}
.a3{
    width: 500px;
    margin: 0 auto;
}
.a4{
    margin-top: 10px;
}
.a5{
    color:black;
    font-weight: bold;
    margin-right: 34px;
}
.box{
    width: 620px;
    height: 340px;
    /*background: rgba(30, 116, 127, 0.4);*/
    background: url("../backgroud/e.png")  left;
    border-radius: 20px;
    margin:0 500px;
    padding: 20px;
    opacity: 0;
    transition: all 2s;
}
.container1{
    width: 2000px;
    height: 2000px;
}
.container1:hover .box,a2{
    transform: translateX(100px);
    opacity: 1;
}

.biaodan{
    width: 600px;
    height: 50px;
}
.container{
    font-weight: bolder;
     /*float: left;*/
     /*margin-left:200px;*/
 }
.bx{
     background: rgba(191, 184, 149, 0.5);
     float: left;
 }
.rightfloat{
    float: right;
    opacity: 0.6;
}
.a7{
    float:right;
}
.a8{
    float: left;
}